GitHub configuration to push same repository into different services. Just change according to your needs your repository .git/config file.

config

# GitHub configuration to push same repository into different services
[core]
    repositoryformatversion = 0
    filemode = true
    bare = false
    logallrefupdates = true
# git push all
[remote "all"]
    url = git@github.com:<login>/<repository>.git
    url = git@bitbucket.org:<login>/<repository>.git
    url = git@heroku.com:<login>/<repository>.git
    url = ssh://<id>@<app-name>-<namespace>.rhcloud.com/~/git/<app-name>.git/
# git push origin
[remote "origin"]
    fetch = +refs/heads/*:refs/remotes/origin/*
    url = git@github.com:<login>/<repository>.git 
# git push bitbucket
[remote "bitbucket"]
    fetch = +refs/heads/*:refs/remotes/origin/*
    url = git@bitbucket.org:<login>/<repository>.git
# git push heroku
[remote "heroku"]
    fetch = +refs/heads/*:refs/remotes/origin/*
    url = git@heroku.com:<login>/<repository>.git
# git push openshift
[remote "openshift"]
    fetch = +refs/heads/*:refs/remotes/origin/*
    url = ssh://<id>@<app-name>-<namespace>.rhcloud.com/~/git/<app-name>.git/
[branch "master"]
    remote = origin
    merge = refs/heads/master